"Over a decade ago, it was discovered that the NSA embedded backdoor access into Windows 95, and likely into virtually all other subsequent internet connected, desktop-based operating systems. However, with the passage of time, more and more people went "mobile", and as a result the NSA had to adapt. And adapt they have: as Bloomberg reports, "The NSA is quietly writing code for Google’s Android OS."
Is it ironic that the same "don't be evil" Google which went to such great lengths in the aftermath of the Snowden scandal to wash its hands of snooping on its customers and even filed a request with the secretive FISA court asking permission to disclose more information about the government’s data requests, is embedding NSA code into its mobile operating system, which according to IDC runs on three-quarters of all smartphones shipped in the first quarter? Yes, yes it is"
http://www.blacklistednews.com/The_NSA_Has_Inserted_Its_Code_Into_Android_OS%2C_Or_Three_Quarters_Of_All_Smartphones/27230/0/38/38/Y/M.html